Circuit breakers are protective switches that are designed for switching high currents. In contrast to load switches, circuit breakers can not only switch regular operating currents and low overload currents, but also high overload currents and short circuit currents in the event of faults (generator circuit breakers up to 800 kA), hold these fault currents for a predefined time and switch them off safely without damage. Circuit breakers are built single-pole or three-pole.https://de.wikipedia.org/wiki/Schutzschalter
They are used for safety in the network against overvoltage. They are passive control elements, or safety elements, but they also switch the network.
Links in this paragraph point to German Wikipedia entries.
|
|
|
|
Circuit breaker (extra-high voltage)
Circuit breaker, the circuit limiter is in substations and stations
|
|
|
|
|
|
Circuit breaker (high voltage)
Circuit breaker, the circuit limiter is in substations and stations
|
|
|
|
|
|
Circuit breaker (medium voltage)
Circuit breaker, the circuit limiter is in substations and stations
|
|
|
|
|
 
|
Circuit breaker (low voltage)
Is not a circuit limiter but serves as a switch between the low voltage distribution and the feeding transformer. In the first picture, the circuit breaker to the feeding transformer is located in the center of the picture. The second picture shows a circuit breaker of a house installation.
|
|
|
|
|
|
Exit bar (low voltage)
Low voltage exit bar (circuit limiter).
Various specialized information is added to this element, so that the coloring for the corresponding subnetworks can also be visualized (electric circuit, circuit, ...).
|
|
|
|
|
|
Exit bar (lighting)
Lighting exit bar feeder (circuit limiter)
Various specialized information is added to this element, so that the coloring for the corresponding subnetworks can also be visualized (electric circuit, circuit, ...).
Used in stations and distribution boxes (low voltage installations) for switching and fusing.
|
|
